Safety-Oriented System Hardware Architecture Exploration in Compliance with ISO 26262

Abstract

Safety-critical intelligent automotive systems require stringent dependability while the systems are in operation. Therefore, safety and reliability issues must be addressed in the development of such safety-critical systems. Nevertheless, the incorporation of safety/reliability requirements into the system will raise the design complexity considerably. Furthermore, the international safety standards only provide guidelines and lack concrete design methodology and flow. Therefore, developing an effective safety process to assist system engineers in tackling the complexity of system design and verification, while also satisfying the requirements of international safety standards, has become an important and valuable research topic. In this study, we propose a safety-oriented system hardware architecture exploration framework, which incorporates fault tree-based vulnerability analysis with safety-oriented system hardware architecture exploration to rapidly discover an efficient solution that complies with the ISO-26262 safety requirements and hardware overhead constraint. A failure mode, effect, and diagnostic analysis (FMEDA) report is generated after performing the exploration framework. The proposed framework can facilitate the system engineers in designing, assessing, and enhancing the safety/robustness of a system in a cost-effective manner.

Longitudinal Functional Safety Analysis and Algorithm Design of Traffic Jam Pilot

“…Many scholars had done a lot of research in the field of functional safety in conjunction with ISO 26262. Lu Kuen-Long et al proposed a system hardware architecture framework that combined fault tree vulnerability analysis with hardware architecture to discover solutions that met ISO 26262 security requirements and overhead constraints while generating Failure Mode, Effects, and Diagnostic Analysis (FMEDA) reports [15]. Marcos David et al provided a wellestablished design methodology for battery management systems (BMS) for lithium batteries in electric vehicles, following the ISO 26262 process from conceptualization to functional verification [16].…”